GB/T 30024-2020 Cranes—Proof of competence of steel structures

Scope: This standard specifies the general conditions, requirements, methods and parameter values for proficiency testing of crane metal structures based on the limit state method, to be used in conjunction with the applicable part of ISO 8686 for loads and load combinations. This standard is general and applies to all types of cranes. For special and special cranes, other standards may specify the specific requirements for proficiency verification. Capability verification by means of theory-verified calculations and/or tests aimed at avoiding hazards associated with structural performance at established strength limits (e.g. yield limit, fatigue, brittle fracture). According to ISO8686 1, two methods can be used for proficiency testing calculations: the limit state method of the sub-item safety factor, and the allowable stress method of the overall safety factor. Although the validity of the allowable stress method is not excluded, this standard only involves the limit state method. This standard does not include proficiency testing calculations for accessory components (such as railings, stairs, walkways, cabs). However, the impact of these auxiliary components on the main structure needs to be considered.

ISO 148-1:2009 Metallic materials - Charpy pendulum impact test - Part 1: Test method
ISO 273:1979 Fasteners; Clearance holes for bolts and screws
ISO 286-2:2010 Geometrical product specifications (GPS) - ISO code system for tolerances on linear sizes - Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts

GB/T 30024-2020Cranes—Proof of competence of steel structures